Report: Daniel Baldwin to Replace Spencer Pratt

Guess jungle life isn't all it's cracked up to be. But not even helping charity could keep Heidi Montag and Spencer Pratt from getting out of the NBC show I'm a Celebrity ... Get Me Out Of Here on the very first episode.

And now there's a surprise in store for remaining contestant Stephen Baldwin, 43, according to DailyFill.com – which reports that his older brother, Daniel Baldwin, is secretly in Costa Rica. Daniel, 48, is now poised to step in for Pratt, 25, who twice threatened to walk off during the premiere episode with his wife Montag, 22.

A source also tells the site that Holly Montag has just been put on a plane to Costa Rica to fill in for Heidi – reportedly promising producers that she'll hang in there longer than her wimpy sister.

The show's rep at NBC could not be reached for comment. Reps for Heidi and Spencer also could not be reached.– Kristin Boehm